>cd02523 PC_cytidylyltransferase Phosphocholine cytidylyltransferases catalyze the synthesis of CDP-choline. This family contains proteins similar to prokaryotic phosphocholine (P-cho) cytidylyltransferases. Phosphocholine (PC) cytidylyltransferases catalyze the transfer of a cytidine monophosphate from CTP to phosphocholine to form CDP-choline. PC is the most abundant phospholipid in eukaryotic membranes and it is also important in prokaryotic membranes. For pathogenic prokaryotes, the cell surface PC facilitates the interaction with host surface and induces attachment and invasion. In addition cell wall PC serves as scaffold for a group of choline-binding proteins that are secreted from the cells. Phosphocholine (PC) cytidylyltransferase is a key enzyme in the prokaryotic choline metabolism pathway. It has been hypothesized to consist of a choline transport system, a choline kinase, CTP:phosphocholine cytidylyltransferase, and a choline phosphotransferase that transfers P-Cho from CDP

Probab=100.00 E-value=1.8e-41 Score=254.47 Aligned_cols=221 Identities=20% Similarity=0.328 Sum_probs=163.7 Q ss_pred EEEECCCCCCCCCCC---CCCCEEEECCEEHHHHHHHHHHHCCCCEEEEEECCCHHHHHHHHCCCCCEEEEEECC--CCC Q ss_conf 999458877232788---874412588485799999999977997799995798899999730269728999859--988 Q gi|254780942|r 7 AIVLAAGRGHRMKSS---SSKVLQKIAGKPMISHVMETIAAAGIENVALVLGYGAEEITRINFPPTLSVEYYIQD--CQQ 81 (442) Q Consensus 7 AiILAaG~GtRl~p~---~pKpLlpi~gkpli~~~i~~l~~~g~~~ivvv~~~~~e~i~~~~~~~~~~i~~v~q~--~~~ 81 (442) T Consensus 1 AiILAaG~GtRl~plT~~~PK~L~~i~gkpli~~~i~~l~~~gi~~i~iv~gy~~e~i~~~~~~-~~~i~~i~n~~~~~~ 79 (229) T cd02523 1 AIILAAGRGSRLRPLTEDRPKCLLEINGKPLLERQIETLKEAGIDDIVIVTGYKKEQIEELLKK-YPNIKFVYNPDYAET 79 (229) T ss_pred CEEECCCCCCCCCCCCCCCCCCCCEECCEEHHHHHHHHHHHCCCCCCEEECCCCHHHHHHHHHH-CCCCCCEEEEECCCC T ss_conf 9893687765688645798803217998799999999999849985366555489999999853-136540340002367 Q ss_pred CHHHHHHHCCCCCCCCCCEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCEEEECCCCCCCCEEEECCCCCEECCCCCCC Q ss_conf 61446641000012344605898515411153322000000135861001001012215744042023331001001466 Q gi|254780942|r 82 GTAHAVLTAQDAIKPGYDDVIIMYGDVPLVSSHTLKKAMDKIAQGYSIAVVGFNADNPKGYGRLLIKNNEIIAIREENDA 161 (442) Q Consensus 82 GTa~Ai~~a~~~l~~~~~~~lVl~GD~~li~~~~l~~l~~~~~~~~~~~i~~~~~~dp~~yGvV~~d~~~v~~i~Ek~d~ 161 (442) T Consensus 80 g~~~sl~~a~~~~~---~~~lv~~gD~-i~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 154 (229) T cd02523 80 NNIYSLYLARDFLD---EDFLLLEGDV-VFDPSILERLL-SSPADNAILVDKKTKEWEDEYVKDLDDAGVLLGIISKAKN 154 (229) T ss_pred CHHHHHHHHHHHCC---CCEEEEECCE-ECCHHHHHHHH-HCCCCCEEEEEECCCCCCCCEEEEECCCCCEEEEEECCCC T ss_conf 82999998887558---9859995776-54667999998-4778887999956457787447994268708999868999 Q ss_pred CCCCCCCCCCCCCHHEECCHHH---HHHHHHCCCCCCCCHHHHHHHHHHHHHHHCCEEEEEECHHHEECCCCCCCCCCCC Q ss_conf 7542100035560011125014---6777532888740011121148999973077179991721430111210000001 Q gi|254780942|r 162 TDEERKIHYCNSGLMAIDGLYI---MDWLLQIKKNKVSQEYYLTDIIEKARLDGKSIASIDVKEQEVCGCNNRYELSLIE 238 (442) Q Consensus 162 ~~~~~~~~lin~GiY~f~~~~L---~~~l~~l~~~~~~gE~yltDii~~l~~~g~~i~~~~~~~~~~~gv~~~~~L~~~~ 238 (442) T Consensus 155 ~~---~~~~~~~Gi~~~~~~~~~~l~~~l~~~~~~~-~~~~~~~~~i~~li~~~~-~~~~~~~~~~W~dIgt~edl~~Ae 229 (229) T cd02523 155 LE---EIQGEYVGISKFSPEDADRLAEALEELIEAG-RVNLYYEDALQRLISEEG-VKVKDISDGFWYEIDDLEDLERAE 229 (229) T ss_pred CC---CCCCEEEEEEEECHHHHHHHHHHHHHHCCCC-CCCCCHHHHHHHHHHCCC-CEEEECCCCEEEECCCHHHHHHHC T ss_conf 88---7462899999998999999999999728677-787239999999980799-669984893199696999999649

HHsearch alignment for GI: 254780942 and conserved domain: cd02523